Pronunciation: (pu-rif'u-rē), [key]
1. the external boundary of any surface or area.
2. the external surface of a body.
3. the edge or outskirts, as of a city or urban area.
4. the relatively minor, irrelevant, or superficial aspects of the subject in question: The preliminary research did not, of course, take me beyond the periphery of my problem.
5. Anat.the area in which nerves end.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.